Improved stop-motion for drawing-heads



"UNITED STATE-s PATENT OFFICE.

vBENJAMIN O. PAIG-E, OF LOWELL, MASSACHUSETTS.

IMPROVED STOPMOT|ON FOR DRAWING-HEADS.

Specification forming part of Letters Patent No. 37,823, dated March 3, 1863.

To @ZZ whom t may concern:

Be it known that I, BENJAMIN O. PAIGE, a citizen of the United States of America, and a resident of Lowell, in the county of Middlesex and State of Massachusetts, have made a new invention or improved stop-motion for a railway drawin g-head, used in the preparation of cotton or other fibrous material for being spun; and I do hereby declare the same to be fully described in the following specification and represented in the accompanying drawings, of which- Figure l is a top view, Fig. 2 a front elevation, and Fig. 3 au end view, of a pair of delivering or calendering rollers provided with my said invention, which I have designed as an improvement with reference to what constitutes the subject of thesecond section of the claims, as made in the Letters Patent of the United States granted to me 011 the 12th day of February, ot' the year 1861, such Letters Patent being numbered 394.

In carrying out myinvention or present improvement I not only entirely dispense with a swinging frame for supporting the calender or upper delivering-roller, but I also dispense with the adjustable screw or stud serving to actuate the catch-lever, in manner as described in the speciiication of the said patent, and in lieu of such devices I employ a tripper, or its mechanical equivalent, so combined with a lever-latch and so applied to the upper of the two calendering-rollers as to revolve with the said upper roller or be revolved by its shaft and be caused to actuate the lever-latch during a fall 0f the upper roller or such an approach of it toward the lower one as would result from any diminution in the thickness or any breakage of a sliver while in the act of passing between the said rollers. I construct the upper roller with its cylindrical surface iiuted, and combine therewith and withthe lower or plain roller certain guard-rollers whose purpose is to protect from contact with the lower roller or from being worn thereby the spaces or surfaces between each two of the iiutes of the upper draft-roller.

The slide-rod W represented in the accompanying drawings answers and is supposed to perform a like function or duty to that similarly marked and exhibited in the drawings of my said patent. It is also provided with a notch, c, and a retracting-spring, A4. A rightangular or bent lever-latch, Z, whose fulcrum is an adjustable pin, o, has its lower or horizontal arm arranged so as to fall into the said notch, while its vertical or other arm, a extends upward and into the groove b of a tripper, A, such groove being crossed by a tooth or projection, c. The tripper is a cylinder or grooved roller affixed concentrically on the shaft 'd of the upper of two calender-rollers, It S, whose shafts d c are supported in bearings formed in two standards, f f, projecting upward from the table A of the drawing-head. The said shafts have connection-gears g h, and there is a gear, t', xed on the lower of the shafts, for the purpose of imparting rotary motion to it. The upper roller, R, is borne downward toward the lower one, S, by means of pressure-springs or suitable devices, as shown at k 7c, l l, m m, and is iluted lengthwise about its cylindrical surface and in a series of parallel grooves, each two of them having a narrow interval or space between them. At each end of the said iluted roller there is a guardroller, m2, having a diameter equal to that of the fluted roller and being a part of the latter or being affixed concentrically on its shaft. The peripheries of these guard-rollers are to run in contact with the curved surface of the lower roller and prevent wear of the iluted rollers thereby whenever there may be no sliver between the calender-rollers.

I would remark that the fulcrum-pin o ought to be so applied to its supporter a as to be capable ofbeing adjusted vertically', in order to properly adapt the upper end of the vertical arm of the lever-latch to the tooth or pro- Vjection c of the tripper.

From the above it will be seen that the leverlatch is not actuated by the mere weight of the upper roller or that of any device connected with it-but is operated by the rotary force of the roller acting through the tooth or projection c while the roller may be in revolution, and, particularly, whenever between the rollers there may be such a diminution in the thickness of a sliver as will cause the upper roller to fall or approach toward the lower one. Under such circumstances, the tooth or proj ection c' of the tripper will be carried in contact with the vertical arm of the latch, and by pressure against the same will move the latch out of the notch c of the slide-rod W, the consequence of which will be a stoppage of the I I t railway drawing head and the carding ma chinery connected with it.

Fluting one of the calender-rollers is advantageous, particularly when a stop-motion of my improved kind is employed in connection with them, in manner as described, for should a bunch of the cotton or fibrous material or any other substance become wedged into the delivering-trumpet, which is generally placed in rear ofthe rollers, the rollers will not slide on the sliver, as they would if both of the curved surfaces of the rollers were smooth or neither of them uted, but they will draw on the sliver, and thus prevent it from packing or accumulating on the table or winding about the drawing-rollers until they may become so charged with it as to be incapable of doing Witnesses:

J osHUA MERRILL, EDWIN T. WILSON. 

